Stone sawing machine



Oct. 29, 1935. E. BENEDINI 2,019,386

STONE SAWINGMACHINE Filed Nov. 5, 1954 5 Sheets-Sheet 1 52/0 BEA/501MINVENTOR was: '62:. f f 5 ATTORNEY Oct. 29, 1935. E. BENEDINI STONESAWING MACHINE Fil'ed Nov. 5, 1954 5 Sheets-Sheet 2 52/0 BENED/N/WITNESS:

Oct. 29, 1935. BENEDlNl 2,019,386

STONE SAWING MACHINE Filed Nov. 5, 1934 3 Sheets-Sheet 3 Ez/o BENEO/N/INVENTOR 2 am wfa.

' ATTORNEY Patented Oct. 29, 1935 UNITED STATES PATENT OFFICE STONESAWING MACHINE Ezio Benedini, Barre, Vt.

1 Claim.

chine for this purpose which may be so adjusted as to out slabs of anydesired thickness.

Another object of the invention is to provide a machine for the purposestated which may be conveniently installed, in situ, on ledges and inquarries for the delivery thereto of blocks of granite or other stone,to be cut.

This invention also consists in certain other features of constructionand in the combination and arrangement of the several parts, to behereinafter fully described, illustrated in the accompanying drawingsand specifically pointed out in the appended claim.

In describing my invention in detail, reference will be had to theaccompanying drawings wherein like characters denote like orcorresponding parts throughout the several views, and in which:

Figure 1 is a view in side elevation of the machine embodying theinvention.

Figure 2 is a top plan view of the machine.

Figure 3 is a detail view in elevation of one end of the machine.

Figure 4 is a side elevation of the structure shown in Figure 3.

Figure 5 is a top plan view of an adjusting and tensioning means for thecutting cable of the machine.

Figure 6 is a view in side elevation of the structure shown in Figure 5.

Figure '7 is a top plan view of one of the uprights of the machine uponwhich the guiding means is mounted.

Figure 8 is a view in elevation of the structure shown in Figure 7.

Figure 9 is a view similar to Figure 8 illustrating the lower end of oneof the uprights and a cable means for elevating and lowering the cuttingcable.

As above stated, the machine embodying the invention is to be employedin situ, or in other words, at any point at a clearing where it would bemost convenient to deliver the block, to be cut, to the machine, andpreferably a location will be selected where a level ground surface I,somewhat elevated, is available and preferably a lower ground surfaceadjacent thereto, or the ground surface may be worked by scrapers andscoops in order to provide the desired contour to accommodate the partsof the machine. The machine consists essentially of a pair of uprightsindicated by the numeral 3, each of which comprises a pair of channeledbeams, indicated by the numeral 4, the channels of these beams beingpresented toward each other and the beams being mounted at their lowerends in upright position, in any suitable manner. Laterally dis- 5 posedwith respect to one of the uprights is an anchoring upright indicated bythe numeral 5, which serves a purpose to be presently explained, andsimilar uprights 6 and I being arranged near the brink of the elevatedearth surface I. 10 The block of granite or stone to be cut is supportedbetween the uprights 3, upon a suitable arrangement of supporting beamsor blocks, indicated by the numeral 8 in a true horizontal position,assuming that the block is to be cut into 15 slabs, by the formation ofincisions in vertical planes in the block, as will be apparent byreference to Figures 1 and 3 of the drawings.

The block of granite, which is indicated by the reference character G,is relatively braced with 20 respect to the uprights 3 and equidistantlyspaced between the same by braces 9 embodying rods I0 connecting each atone side of each end of the block and the other rod of each brace to thecorresponding side of the respective upright 3, 25 a turnbuckle ll beingprovided for adjustably connecting the said rods. The block is furtherbraced by rods I2 which are arranged to hear at their ends against thefaces of the block which are presented toward the uprights 3, and which30 rods, at their other ends, are threaded as indicated by the numerall3, and fitted through brackets l4 upon the respective uprights, a nut l5 being fitted onto the threaded portion of each rod and adjustable tobind against the respective 35 bracket M, when the nut is rotated, sothat pressure may be exerted against the block of granite G near thelower portion thereof, it being observed that the braces 9 are connectedwith the block adjacent the horizontal middle 40 thereof.

The cutting medium of the machine is in the nature of a cable such, forexample, as a fourwire twisted cable of cold steel and this cable isindicated in the drawings by the numeral l6 and is led transverselyacross the upper side of the block of granite G and then about pulleysI! which are rotatably mounted upon spindles l8 journaled in a bearingcomprising bearing members l9 and mounted upon a plate of oblong form,indicated by the numeral 20, and which plate is slidable along theflanges of the angle irons 4 comprising the uprights 3, rollers 2| beingjournaled' upon suitable spindles 22 extending from the opposite sidesof bearings 23' upon the said plate at the upper and lower ends of theplate. The purpose 7 of this construction is to provide means wherebythe pulleys [1 may be vertically adjusted upon the uprights 3 and thismeans further comprises an endless cable 24 which is connected at itsends to the said bearing 23, as indicated by the numeral 25 upon each ofthe uprights, the cable being passed about an idle pulley 26 at thelower end of each upright and about the end portions of a shaft 21,which is rotatably mounted in a bearing head 28 at the upper end of theupright, a worm pinion 29 being fixed upon the shaft and a worm shaft 30being mounted upon the bearing head 28 and provided with a crank handle3 I, whereby it may be rotated so as to effect rotation of the shaft 21and effect travel of the cable 24, so as to effect up and down movementof the bearing for the respective pulley I'l, whereby raising orlowering that stretch of the cable l6 which extends between the twopulleys [1. These pulleys l! are idle pulleys and the stretches of thecable I6 are led upwardly from the pulleys l1 and over other idlepulleys indicated by the numeral 32, and which pulleys are mounted foradjustment in various ways, as will now be described.

The mounting means for the pulleys 32 is clearly illustrated in detailin Figures5 and 6 of the drawings, and the mounting comprises anextension 33 which extends from the bearing head 28 and has upon itsupper side a tubular bearing '34 in which is rotatably mounted a spindle35 from the upper end of which extend spaced arms 36 carrying at theirouter and upper ends, the

arms being upwardly inclined, bearing members .31 in which are journaledthe ends of the spindle of the pulley 32, grease cups 38 being providedupon the said bearing members 37.

A set screw 39 is fitted through the side of the sleeve 34 and isadapted to be tightened so as to hold the spindle 35 in any desiredposition of its "rotative adjustment, and, therefore, provide forpositioning of the arms 36 at any desired angle with respect to therespective uprights 3.

The rotation of the crank handle 3| will effect rotation of the shaft 39and the worm of this shaft will rotate the worm pinion 29 so as to windor unwind the cable 24 and thus raise or lower the bearing for the idlepulley l1.

In order that the stretch of the cable l6 which travels between thepulleys I? may be constantly "tensioned during the cutting operation, soas to cut through the block of granite or stone, the cutting cable It isled downwardly from the pulleys 32 and when stretched thereover is ledabout an idle pulley 40 mounted upon the upright '5 and thence about apulley 4| upon the upright 6. The cable is then passed about an idlepulley 42 mounted upon the front of a cart 43 which is provided withsupporting wheels 44 running on track trails 45 which are inclined at anangle of approximately 45 and extend from the upper or elevatedsupporting ground surface I and the lower surface 2, and, after passingabout the pulley 43, the cable is led about an idle pulley 46 upon oneside of the upright f and about a pulley stretch which extends betweenthe pulleys I1, and

in practice, it will be found desirable to maintain a pile 50 of somepowdered or granular abrasive, and a barrel or other container 5| forwater, upon the upper side of the block, so that a mixture of the pile50 and water may be delivered into the incision being made in the blockof granite, and thus assist in the cutting action of the cutting cable,it will also be evident, at this point, that by rotating the crankhandles 3| in one direction, the cable 24 may be paid out at its stretchwhich is connected with the bearing 2|, so as to provide for lowering ofthe pulleys I! with respect to the uprights 3, gradually, as the stretchof the cable which passes between the pulleys I! cuts through the blockof granite, and, of course, rotation of the crank handle in the oppositedirection will serve to return the pulleys I! to their elevatedpositions after the cable has cut entirely through the block of graniteor to such depth as may be required.

From the foregoing description of the invention it will be evident thatwhile, in the illustrated embodiment, the shafts l8 may be mounted atright angles to the position shown in the drawings or at any other anglebetween the horizontal and vertical, where it is required to make cutssidewise from the machine, and this change in position of the shafts maybe effected by changing the positions of the uprights 3.

What is claimed is:

In a machine for cutting a block of stone into slabs, spaced uprights,pulleys mounted thereon, an endless cutting cable trained about thepulleys with one stretch extending between the uprights to extend overthe block to be cut, means for imparting travel to the cable, means forfeeding the pulleys downwardly along the uprights to feed the saidstretch of the cable through the block, as the cutting of the blockprogresses, and a brace connected at one end to each upright to extendhorizontally therefrom and provided with means at its other end fortemporary anchorage to the block to be cut, the said means beingadjustable as to length, and another brace for each upright comprising athrust rod, a bearing upon the upright through which the rod isengageable and the portion of the rod which is engaged through thebearing being threaded, and a nut threaded upon the portion of the rodand adjustable to bear against the said bearing and to effect feeding ofthe rod therethrough in the direction of the block.

EZIO BENEDINI.

